System of devices for excavating and loading gravel and the like.



, W H. COMPTON. SYSTEM or DEVICES FOR EXUAVATING AND LOADING GRAVEL AND '1 HE LIKE.

mmwm 1909' Patented Aug- 16,1910.

4 sums-5113m- 1.

l Q i-bvwooco W. HQGOMPTON'. SYSTEM or DEVICES FOR YEXGAVATING AND LOADING GRAVBL AND TH APPLICATION FILED EEPT. '7, 1 909. 967,61 3.

E LIKE.

4 SHEETS-11331 2.

Patented Aug. 16,1910.

w. H. common. GAVATING AND LOADING GRAVBL AND THE LIKE.

Patented Aug. 16, 1910.

4 SHEETBSHIZBT 3.

' SYSTEM OF DEVICES FOR EX APPLICATION FILED SEPT. 7, 1909.

W. H. COMPTON.

OAVATING AND LOADING GRAVE-L AND THE LIKE.

Patented Aug. 16,1910.

SYSTEM OF DEVICES FOB EX 4 SHEETS-SHEET 4.

Wilt macaw A m W a Hiom M g UNITE STATES, PATENT OFFICE.

'WIIJLIAM'lH. COMPTON, OF MILWAUKEE, WISCONSIN.

, SYSTEM or nnvrcns FOR nxcsva'rme m LOADING enavnr. in THE LIKE.

To all whom it may concern:

Beit known that I, WILLIAM H. Common, a citizen of the United States, residing at the city of Milwaukee, count of Wilwau a system of devices for elevating and discharging gravel and the like.

The object of my invention is among other things, to provide means for elevating gravel and similar substances to a place of'deposit and automatically discharging the same. I

The construction and arrangement of the several eotiperating parts of the system is explalned by reference to the accompanying 1 drawings, in which,

Figure 1 represents aside view of several together in position for use. Fig. 2. is an end view thereof. Fig. 3 is a detail of the dumping mechanism. Fig. l is a diagrammade VIEW, of a motor driven cable and drum shown in the other views, 1 to 4: inclusive,-and Fig. 5is a side view of a moditied form of system in which a single cable is used in connection with a single scraper and discharge mechanism.

While my system is adapted to be'used for general excavating purposes, and for elevating and discharging earth, ore and a great variety of substances, .and is also adapted to be operated by horse as well as by a motor driven ower, I have for brevity v of description re erred to the same as a motor dIIVBIl system for elevating gravel and the like.

Like parts are identified by the same referenee numerals throughout the several views.

1 is a portable derrick or frame beneath which a-vehicle 4'is indicated in position to recelve the gravel as it is elevated and discharged from the upper end of the derrick.

2 is an inclined plane or platform, upon which the scoop 3 is drawn with its load preparatory to discharging its contents.

he scoop 3 is adapted to'be drawn to and from the platform y the cable 5, and said cable is moved longitudinally in opposite directions by and through the motor 6 and motor driven drum 7. The motor 6 13 pro- Patented Aug. 16,1910.

vided with a lever 8, by which it is adapted to be started, sto ped and its movement reversed at the' wil of'the operator.

The cablet5 is sup'portedat one end by and upon a revoluble drum 7, and it passes from thence over the pulleys 9 and 10,-

thence downwardly and rearwardly past the place of supply where the gravel is located,

' to and around the pulley 11, and said pulley.

11 is connected with the ground or any other stationary object-through the bolt 12 and. pulley block 13.

It will be obvious that as the drum 7 is revolved, one of the cable members 5 will be moved forwardly and theother 6 rear wardly above the platform 2, as indicated by the arrows shown abovesaid cable members, whereby a scoop connected with one of said cable members will bedrawn forwardly to the place of discharge, while the other i scoop will be drawn rearwardly from the -place of discharge back to. the place of of the elements of the system as connected As the respective scoops approach the up per end of the platform 2, they are brought upon the inverting-table 17, when by the further forward movement of the cable, the scoops 3 and tables 17 are inverted together and the contents of the scoops discharged into the vehicle below. The inverting table is pivotally connected at one end to the standards 18 of the derrick by the hinge rod 19, and is provided at its opposite end with atriprod 20, which rod as the scoop passes over it is engaged by the trip hook 21,. which is connected with the rear end of the scoop, whereby as said scoop is moved forward, the rear end of the table is carried upwardly and forwardly in a circular course around its pivotal support, whereby the rear end of the scoopis raised until its contents are discharged, as stated. The inverting table 17 is partially. counterbalanced by two weights 22, which weights are connected with the table through the cables 23, one end of said cables 23 being connected with the free end of said table, whence they sass upwardly and over the pulleys 24, an from thence downwardly partially around the pulleys 25 I only serve to cooperate with the forward movement of the scoop in raising the table, but they also retard the downward movement-of the table as the scoop 3 is moved in the opposite direction, whereby the shock and jar Which might otherwise be caused by the downward movement of the table and scoop is avoided.

26 are springs which are supported from the standards 18 in such a position that the scoop is brought in contact therewith as the table is inverted, when owing to their re-.

siliency they serve as cushions to the scoop and diminish the jar which might otherwise occur as the scoop is thrown forward in the act of discharging its contents.

The derrick is preferably mounted upon a plurality of rollers 27 to facilitate moving the same from place to place as circumstances may require. The scoop is provided with handles 28 by which it is controlled by the operator as it is being filled.

The pulleys 9 and 10 are movably suspended from the to of the derrick by hangers 9-9 and r0 lers 10'10 operating upon the horizontal rods 11'11.

The-bail 14 is connected at its respective ends to the scoop 3 through a air of links 14, in which the lower ends 0 the bail are adapted to slide forwardly and backwardly as the scoop is being drawn and dumped. When drawing the scoop forward, the lower ends of the bail are drawn to the frontend of the links when however the scoo is inverted, the lower ends of the bail slide upward to the opposite or rear ends of said links, as'shown inFig. 3.

In the modified system shown in Fig. 5,

a single operating cable 30 is shown in connection with the scoop 31, and said cable and scoop are adapted to be operated by horse, or other power, while the invertible member 33, counterweight- 34, weight supporting cable 35 cable supporting pulleys 36 and 37, and trip members 38 an 39 are con- 1 structedand arranged substantially as shown in the other figures of the drawings. The cable is central y supported from the to of the derrick on the pulley 40 and passes rom thence beneath the pulley 41, and from thence to thehorse orother power.

Att'entionis respectfully called to the fact that by applicants construction the trip member which is attached to the rear end of the scoop is located-below the line of draft of the scoop, or in other-words, it is located below the pivotal attachment of the scoo with which the operating cable is connects whereby the power required to elevate the scoop and scoop supporting table is reduced to the minimum.

I am aware that a platform has previously from the upper end of an elevating derrick in such a manner that when the elevatin carriage is drawn thereon past such pivota support, said carriage and platform are both simultaneously caused to be inverted by the gravity of the load, which has thus been drawn past the center of gravity of such pivotally supported platform. It will be obvious, however, that a platform thus pivotally supported below its center of gravity, when once inverted, will require great power to bring it back to its original position. B my improvement, however, the invertible ta 1e 17 is pivotally sup orted not at its center, but at its upper en and such table is raised and the contents of the scoop discharged solely by the action'of the cable,

which is connected with the rear end of the temporarily connected with the lower rear end of said table, whereb when the contents of the scoo is discharge and the movement of the cab e reversed, said scoop and table will be brought back to their original position by their own gravity, and a counterweight is used simply to retard the downward movement of the table after the contents of the scoop have been discharged and to cooperate with the cable in raising the rear end of the table, and scoo preparatory to discharging the contents of the latter.

I am awere of the fact that pivotally supported tables have been connected with a counterbalancin weight through a flexible member, which %exible member is connected with said tables above their pivotal support, the object of said weight being to draw the table back to its normal position after its contents have been discharged, while by my construction, the counterbalancing weight 34 is connected with the pivotally su ported table below its ivotal' support an serves to retard the bac ward or downward movement of the table after the contents of the scoop have been dischar ed.

Having thus describe my invention what I claim as new and desire tosecure by Letters Patent, is, v

1. In an elevating system of the described class, the combination of a derrick a table pivotally connected at its upper end to said derrick, a trip member connected with said table, an elevating scoop, a bail connected with said scoop, a trip member. connected with the lower rear end of said scoop, a scoop operating cable connected with said bail, a counterbalancin weight, a pulley suspended from said derrick above said table, a flexible member connected at one end to said table below its pivotal support passing from thence over said pulley and connected at its opposite end with said weight,

scoop and retard their rearward movement after the contents of said scoop have been dis- 7 pivotally o I said table,

. respective sides member of thescoop charged independently of the action of said scoop operating cable.

2. In an elevating system of the described class, the combination of an elevating derrick, upwardly inclined scoop supporting ways supported from said derrick, a table connected at its upper end with said derrick, a trip member connected with an elevating scoop, a bail slidably connected at its respective ends with the of said scoop,'a trip memthe lower rear end of .said scoop a motor actuated cable connected with said bail and adapted to draw said scoop upon said ways and from thence. to said pivotally supported table, whereby the trip ber attached to trip" member of said pivotally supported table andthelower rear end ofsaid scoop terbalance the weight 0 is caused to engage the and table are simultaneously elevated b the further movement of said cables an the contents of said scoop thereby discharged, a pair of cables connected with the, rear end of said ivotally supported table and extending rom thence over pulleys supported from the upper end of said derrick and from thence downwardly, and a pairof weights connected .with the lower ends of said ca les, said weights being ada ted to partly counsaid table and scoop and retard their movement after the contents of the scoop have been discharged, all

sfiulglstantially as and for the purpose speci- In testimony whereof I afiix my signature in the presence of two witnesses.

WILLIAM H. COMPTON. Witnesses I J AS. B. Enwm,

O'. R. Enwm. 

